Container-pump.



W. E. ARNOLD.

CONTAINER PUMP.

APPLICATION FILED APR. 18, 1916.

Patented Dec. 12, 1916.

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I. Adfid PATENT @FFEQE.

CONTAINER-PUMP.

Specification of Letters Patent.

Patented Dec. 12, 1916.

Application filed April 18, 1916. Serial No. 91,935.

To all whom it may concern Be it known that I, WILLIS E. ARNOLD, a citizen of the United States, residing at St. Cloud, in the county of Osceola and State of Florida, have invented certain new and useful Improvements in Container-Pumps, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to certain new and useful improvements in bottle pumps, more particularly to that class of pumps known as container pumps for dispensing liquid from large containers into small containers such as bottles and the like, the object being to provide a bottle pump which can be readily placed in the mouth of an ordinary container so as to dispense the contents of said container, and is especially adapted to be used in drug stores for dispensing heavy fluids.

Another object of my invention is to provide a bottle pump which is so constructed that the valve and piston can be readily removed from the pump cylinder or barrel so as to allow the same to be cleaned, the parts being held in operative position by retainer rings.

Another object of my invention is to provide a bottle pump with a sectional piston rod so as to allow the length of the same to be increased or decreased whereby the pump can be used in containers of various sizes.

Another object of my invention is to provide a bottle pump with a piston which is normally held in raised position by a coiled spring so as to allow the pump to be readily operated in a container without securing the pump or container in any way thereby overcoming the disadvantages now existing in container pumps.

Another and further object of the invention is to provide a bottle pump with a piston having a removable valve'seat and valve cage so as to allow the same to be removed from the piston to clean the same after heavy fluid has been dispensed with the pump.

Another and still further object of the invention is to provide a pump which is exceedingly simple and cheap in construction, the parts being so arranged and mounted that all danger of the samegetting out of order when in use'is prevented.

Another and further object of my invention is to provide the piston with a goose neck havinga swiveled spout which can be turned upwardly so as to prevent the fluid being dispensed from dripping when the pump is not in use. I

Other and further objects and advantages of the invention will be hereinafter set forth and the novel features thereof defined by the appended claims.

In the drawings, Figure 1 is a perspective view of my improved construction of bottle pump showing the same in position within a container. Fig. 2 is a vertical secton from the pump cylinder piston rod and piston showing the arrangement of the valve. Fig. 3 is a detail view partly in sectioop of a slightly modified form of piston ro Like numerals of reference refer to like parts in the several figures of the drawmg.

In carrying out my invention, I employ a pump cylinder or barrel 1 preferably formed of a tube having a notched lower end 2 and provided with an internal groove 3 in which is arranged a split retainer ring A, for holding a removable valve seat'5 in posi tion within the lower end of the pump cylinder 1 as shown in Fig. 2, said valve seat carrying a ball valve 6 forming a check valve over which is arranged the lower end of a coil spring 7 having its end bent into semi-circular form as shown at 8 to form a ball retainer so as to prevent the check valve from being drawn too far up in the pump cylinder when the pump is in operation as will be hereinafter fully de scribed. Mounted within the upper end of the pump barrel 1 is a hollow piston 9 which is held within the pump cylinder 1 by a split retaining ring 10 seated within an annular groove 11 formed adjacent the upper end of the pump cylinder 1 as clearly shown in Fig. 2. The hollow piston 9 is provided with an internally threaded lower end 12 in which is mounted a threaded sleeve 13 provided with a conical valve seat 14: carrying a ball valve 15 which is held in its proper position within the hollow piston 9 by a valve cage 16 formed of a tube having its side slotted with the intermediate portions bent inwardly and upwardly to form arms 17 to provide stops for limiting upward movement of the valve 15.

Connected to the hollow piston 9 is a sectional hollow piston rod 18, the sections of which are connected together by coupling der outthrough the swivel spout 21, carried by the goose neck, said spout being capable of being turned upwardly into vertical position in order to prevent the liquid from dripping after a small container has been filled.

In the modification shown in Fig. 3 the sectional piston rod 22 is formed of two telescoping sections which are secured together by a clamp 23 so as to allow the length of the same to be increased or decreased, the upper section being provided with the goose neck having a-swivel spout.

: In the operation of my improved construction pump as herein shown and described, when it is desired to dispense fluid from a container as shown in dotted lines in Fig. 1, into a small bottle, the pump cylinder or barrel is placed in the mouth of the container with the lower end resting on the bottom of the container. The spring 7 is seated at its lower end on the valve seat 5, over the valve and. at its upper end within the sleeve 13 around the valve seat 14, which normally holds the piston in the position shown in Figs. land 2, so that by pressing downwardlyon the piston rod and allowing the spring to force the piston upwardly, liquid will be drawn into the pump cylinder 1, the valve 6 unseating itself, and as the piston is pushed downwardly, the valve 6 seats itselfa'nd the liquid within the pump cylinderis'forced into the hollow piston and out through the piston rod into the small bottle or container. As the piston is forced downwardly the piston valve is unseated so as to allow the fluid .within the pump cylinder to enter the hollow piston.

In use the spout 21 is forced into the mouth of the small bottle to be filled and by exerting a slight pressure downward on the piston, the contents in the pump cylinder will be forced up through the hollow piston and piston rod into the bottle in such a manner that it is not necessary to hold the container or securethe pump within the same in any way. It will be seen that the goose neck forms a handle which can be readily grasped by the operator. so as to operate the pump to dispense liquid from a large container into a small container, and as the spring within the pump cylinder returns the piston after it has been forced downwardly, it is only necessary to exert a downward pressure onthe' piston in order to dispense the liquid therefrom.

When the pump as'herein shown and described has been used for dispensing a certain kind of liquid, and it is desired to use the pump for other purposes by removing the retainer ring 10, the piston can be drawn out of the pump cylinder, and by inverting the pump cylinder, the spring and ball valve will dropout, and by taking an instrument, the lower valve seat 5 can be readily forced out through the upper end of the cylinder without removing the lower retainer ring 4. If it is desired to remove the lower valve seat from the opposite end of the cylinder, the lower retaining ring a can be removed and the valve seat and valve spring can be drawn out of the lower end of the pump cylinder. After the piston has been removed by unscrewing the sleeve 13 carrying the valve seat, which is preferably provided with notches to receive a spanner, the piston valve can be readily removed from the piston together with the cage in order to allow the same to be thoroughly cleaned. By forming the piston rod hollow and of sections, the length of the same can be quickly increased or decreased and the same can be readily taken apart so that the pump can be shipped in compact form.

I claim:

1. A container pump comprising a pump cylinder, a valve seat detachably mounted within the lower end of said cylinder, a valve mounted on said seat, a spring arranged within said pump cylinder having a valve retainer at its lower end, a hollow piston mounted within said cylinder upon said spring, and a hollow piston rod connected to said piston having a goose neck at its upper end.

2. A container pump comprising a pump cylinder, a valve seat arranged within the lower end of said cylinder, a split ring for retaining said valve seat within said cylinder, a ball valve mounted in said seat, a coil spring arranged within said cylinder having a ball retainer at its lower end, a hollow piston mounted within said cylinder, a piston valve arranged within said piston, a split ring for retaining said piston within said cylinder, and a hollow piston rod connected to the said piston.

3. A container pump comprising a pump cylinder having a check valve at its lower end, a spring supported hollow piston mounted within said cylinder, a piston valve arranged within said piston, a cage for said valve, and a sectional hollow piston rod connected to said piston.

4. A container pump comprising a pump cylinder having annular interior grooves adjacent its ends, a valve seat mounted in the lower end of said cylinder, a split ring arranged within said groove for holding said valve seat within said cylinder, a hollow valved piston mounted within said cylinder, a split ring arranged within the annular groove at the upper end of said cylinder for retaining said piston within said cylinder, and a hollow piston rod connected to said piston.

5. A container pump comprising a pump cylinder having a detachable valve seat at its lower end, a piston working within said cylinder, a retaining ring for said piston, a spring for supporting said piston within said cylinder, and a hollow piston rod connected to said piston having a goose neck at its upper end.

6. A container pump comprising a pump cylinder having a notched lower end, a valve seat detachably mounted within said cylinder adjacent its lower end, a ball valve mounted within said seat, a coil spring arranged within said cylinder having a semicircular portion at its lower end arranged over said ball valve, a hollow piston mounted within said cylinder upon said spring, a piston valve within said piston, a retaining ring for said piston, and a hollow piston rod carried by said piston.

7. A container pump comprising a pump cylinder having a hollow piston mounted therein, said piston having a detachable valve seat, a ball valve mounted in said seat, a valve cage arrangedabove said seat, and a hollow piston rod provided with a goose neck connected to said piston.

8. A container pump comprising a cylinder having a notched lower end and provided with internal annular grooves adjacent its upper and lower ends, a valve seat arranged within the lower end of said cylinder, a split ring arranged within the annular groove under said. valve seat, a hollow piston slidably mounted within said cylinder, a split ring arranged within the annular groove of the upper end of said cylinder for retaining said piston within said cylinder, a piston valve mounted within said piston, a coil spring disposed between said piston and valve seat, and a sectional hollow piston rod connected to said piston having a goose neck at its upper end. I

9. A container pump comprising a pump cylinder having a detachable mounted. valve seat at its lower end, a ball valve mounted in said seat, a coil spring arranged upon said seat having a semi-circular portion extend ing over said ball valve forming a ball retainer, and a valved piston mounted within said cylinder above said spring.

10. In a container pump, the combination with a pump cylinder of a hollow piston mounted within said cylinder having an internally threaded end, a threaded valve seat mounted within the threaded portion of said piston, a ball valve mounted within said valve seat, a valve cage arranged within said piston above said seat, and a hollow piston rod connected to said piston.

In testimony whereof I hereunto affix my signature in the presence of two witnesses.

WILLIS E. ARNOLD.

Witnesses:

P. D. MARINE, COURTNEY DELMO.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. G. 

